/Engine/Source/Editor/PropertyEditor/Public/PropertyCustomizationHelpers.h
Adds a new Section to the list
void AddSection ( int32 LodIndex, int32 SectionIndex, [FName](API\Runtime\Core\UObject\FName) InMaterialSlotName, int32 InMaterialSlotIndex, [FName](API\Runtime\Core\UObject\FName) InOriginalMaterialSlotName, const [TMap](API\Runtime\Core\Containers\TMap)< int32, [FName](API\Runtime\Core\UObject\FName) > & InAvailableMaterialSlotName, const [UMaterialInterface](API\Runtime\Engine\Materials\UMaterialInterface) * Material, bool IsSectionUsingCloth, bool bIsChunkSection, int32 DefaultMaterialIndex )